Refining-engine.



No. 734,669. PATENTED JULY 28,1903.

G. A. CLARK &' H. R. FARNSWOR'I'H. n. P. we, ADMINISTRATOR or G. A. CLARK, imo'n.

REFINING ENGINE.

APPLICATION FILED APR. 2 e. 1902.

N0 MODEL.

THE Norms PLI'ERE co. wommmu" \usnwu'rm, n. c,

No. 734,669. V

UNITED STAT S Patented J u 1y 28, 1903.

PATENT @rrion.

GEORGE A. CLARK, OF HOLYOKE, AND HILAND R. FARNSWORTH, OF

TURNERS FALLS, MASSACHUSETTS; EDWARD P. BAGG ADMINIS- TRATOR OF SAID CLARK, DECEASED.

IREFINING-EVNGINE.

SEEGIFIGATION forming part of Letters Patent No. 734,669, dated July 28, 1903.

Application filed April 28, 1902. Serial No. 104,991- (No model.)

States of America, have invented new and useful Improvements in Pulp-Refining Engines, of which the following is a specification.

This invention relates to theconstruction of refining-engines for paper-pulp, and it is in the nature of an improvement on Letters Patent of the United States issued to George A. Clark (one of the present applicants) on March 25, 1902, numbered 696,314; and the object of the invention is to provide aconstruction which embodies all the general features of said patent, and in addition thereto provides means whereby the pulp-refinin g devices of the said prior construction may be used separately, either for the purpose of running pulp of different qualities or difierent colors through the machine simultaneously, one kind through each head, or for the purpose of passing pulp first through one end of the machine and then through the other, so that the same pulp may receive two separate treatments, whereby it may be more thore oughly refined.

A further object of the invention is to provide means whereby either of the heads of the machine may be easily removed from the arbor.

These improvements will all be clearly described in the following specification, and pointed out in the claims, and are illustrated in the drawings forming part'of this application, in which Figure 1 is a transverse sectional view of a refining-engine embodying our improvements. Fig. 2 is a longitudinal sectional view of the same. The plane of the section on i which Figs. 1 and 2 are taken is indicated by line 1 l on Fig. 2 and line 22 on Fig. 1. Fig. 3 is a side elevation of a sleeve keyed on the main shaft and-illustrating the connection of the heads therewith and also showing more clearly than do the other figures the connection between it and a thin partition which divides the body of the machine transversely.

threaded and a nut dis screwed onto each end, and each of the heads is connected to one of these nuts in such manner that the nut may be rotated to adjust the head toward and from the head of the body. This connection consists of an angular plate a, which is bolted to the nut and provided with a turned-in edge which engages a groove eX- tending circumferentially around the head.

The periphery of these nuts has gear-teeth cutthereon wit-h which a worm-gearfmeshes, whereby these n uts may be rotated,said wormgear being mounted upon a shaft 9 and provided with asuitable hand-wheel. Through the cylindrical body a the main shaft it passes, supported at either end in suitable bearings, and on that portion of the shaft which lies within the body a sleeve t' is keyed. Against each end of this sleeve and interlocking therewith there is mounted upon the shaft h a head j. Both the contiguous surfaces of the headj and the circular plates 0 are provided with blades practically the same as those that are used in all refining-engines, and these are generally arranged in a substantially radial position on these parts. In Fig. dot the drawings the manner of interlocking these heads j with the sleeve t', whereby the two heads become practically one member, is shown, and it consists in forming on the hub of the head j the projections k, which enter similarly-formed notches in the ends of the sleeve, and when theheads are so placed screwing up a nut m against each head, whereby these are held in interlocking engagement with the sleeve.

It will be readily understood that with a headj on either end of the body of the machine that if these heads were keyed onto the shaft it would be practically impossible to remove one of the heads, as there would be no means of driving the key out; but by the construction shown herein either head may be removed at will by unscrewing the nut m and sliding the head off the shaft.

A casing n, secured to the plates 0, encircles each endof the machine, and from this casing the pulp which has passed between the plate and the head passes out through a suitable discharge-pipe, which is indicated by 0, for both ends of the machine.

In carrying out this invention a partition 1) is provided, which is located transversely of the interior of the body a. This partition, preferably, is cast on the body. To provide against the passage of any pulp between the inner edge of the partition and the surface of the sleeve i, the latter is provided with an annular flange q, cast thereon in such position that when the sleeve't' is in its place within the body the side of this flange .will lie close against the side of the partition 19, and against the opposite side of this partition a nut r, threaded on the sleeve 1', is screwed up.

The sides of this flange and nut may be slightly concaved, as shown in Fig. 2, if desired, for the reception of some suitable packing. It is only necessary to provide a light contact with the partition to prevent the passage of pulp from one side thereof to the other. An inlet-pipe .9, located on one side of the partition, will supply pulp to one end of the machine, and another inlet-pipe t, located on the other side of the partition, supplies pulp to the opposite end. Theseinlet-pipes s and t may receive pulp from different sources of different qualities or colors, and that which is reduced on one side of the partition may be taken to one machine and that reduced on the opposite side to another, or these supply-pipes may be connected up, as shown in Fig. 2, in whicht is the inlet-pipe for both ends of the machine considered as source of supply, the otherinlet-pipes being connected with the discharge-pipe 0 of that end of the machine with which the pipe 6 is in communication. In this case the course of the pulp would be through the pipe 25, then through the head at theleft-hand end of the machine, out of the discharge-pipe o, and then through a pipe (indicated by it) and communicating with the inlet-pipe 8, through which the pulp will enter the machine on the opposite side of the partition 19, and from thence pass out of the discharge-pipe 0 at the right-hand end of the machine. With this construction pulp can be sent through one end of the machine first and then through the other, whereby it may be subjected to a much more complete treatment, and thereby better adapted to certain classes of paper. Furthermore, with the machine provided with two separate inlets, it is exceedingly useful in that two grades or two colors of pulp, which are frequently used at the same time on the same machineas, for example, on cylinder-machines making paper which is of one color on one side and of another on the opposite side-0r in the same class of machines wherein the center of the paper is of coarse material and the two sides lined with a finer grade.

It is thus seen that the improvements set forth in this application adapt the machine to many uses to which the machine forming the subject-matter of the said prior patent is not adapted.

It is of course well understood that there are several ways in which thepartition 13 might be secured to the body a in a proper position and in a manner to perform its functions satisfactorily, and we do not wish to be understood as confining ourselves to the particular mode of constructing the partition 10 described herein.

Having thus described our invention, what we claim, and desire to secure by Letters Patent of the United States, is

1. In a pulp-refining engine, a hollow cylindrical body, suitable pulp-refining devices at each end of the latter and operating in planes at right angles to the axis of the body, a partition extending transversely across the interior of the body about midway between its ends, a supply-pipe for pulp entering the body on each side of said partition, and a discharge-outlet for each end of the machine.

2. In a pulp-refining engine, a hollow cylindrical body, suitable pulp-refining devices at each end of the latter and operating in planes at right angles to the axis of the body, a partition extending transversely across the interior of the body about midway between IOC its ends, a supply-pipe for pulp entering the body on each side of said partition, and a discharge-outlet for each end of the machine, and a pipe connection extending between the supply-pipe on one side of said partition and the discharge-opening on the opposite side of the partition.

3. In a pulp-refining engine, a hollow cy- GEORGE A. CLARK. I'IILAND R. FARNSWORTH.

Witnesses:

E. A. BARDWELL, FRANK E. SEVERANCE.

IIC

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